/*
 * Copyright 2013-2023 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.tuling.tlmallorder.service.impl;


import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
import org.tuling.tlmallcommon.BusinessException;
import org.tuling.tlmallcommon.Result;
import org.tuling.tlmallorder.entity.Order;
import org.tuling.tlmallorder.feign.AccountServiceFeignClient;
import org.tuling.tlmallorder.feign.StorageServiceFeignClient;
import org.tuling.tlmallorder.feign.dto.AccountDTO;
import org.tuling.tlmallorder.feign.dto.StorageDTO;
import org.tuling.tlmallorder.mapper.OrderMapper;
import org.tuling.tlmallorder.service.OrderService;

import java.sql.Timestamp;
import java.util.List;

import static org.tuling.tlmallcommon.ResultEnum.COMMON_FAILED;


@Service
public class OrderServiceImpl implements OrderService {

	private Logger logger = LoggerFactory.getLogger(getClass());

	@Autowired
	private OrderMapper orderMapper;

	@Autowired
	private RestTemplate restTemplate;

	@Autowired
	private AccountServiceFeignClient accountService;

	@Autowired
	private StorageServiceFeignClient storageService;

	@Override
	//@GlobalTransactional
	public Result<?> createOrder(String userId, String commodityCode, Integer count) {

		//logger.info("[createOrder] current XID: {}", RootContext.getXID());

		// deduct storage
//		Integer storageCode = reduceStockByRestTemplate(commodityCode, count);
		Integer storageCode = reduceStockByOpenFeignClient(commodityCode, count);
		if (storageCode.equals(COMMON_FAILED.getCode())) {
			throw new BusinessException("stock not enough");
		}


		// deduct balance
//		Integer accountCode = reduceBalanceByRestTemplate(userId, count);
		Integer accountCode = reduceBalanceByOpenFeignClient(userId, count);
		if (accountCode.equals(COMMON_FAILED.getCode())) {
			throw new BusinessException("balance not enough");
		}

		// save order
		Order order = new Order();
		order.setUserId(userId);
		order.setCommodityCode(commodityCode);
		order.setCount(count);
		order.setMoney(count*2);
		order.setCreateTime(new Timestamp(System.currentTimeMillis()));
		order.setUpdateTime(new Timestamp(System.currentTimeMillis()));
		orderMapper.saveOrder(order);
		logger.info("[createOrder] orderId: {}", order.getId());

		return Result.success(order);
	}

	@Override
	public Result<?> getOrderByUserId(String userId) {
		List<Order> list = orderMapper.getOrderByUserId(userId);

		return Result.success(list);
	}

	public Integer reduceStockByRestTemplate(String commodityCode,Integer count) {
		StorageDTO storageDTO = new StorageDTO();
		storageDTO.setCommodityCode(commodityCode);
		storageDTO.setCount(count);
		//RestTemplate远程调用
//		String storage_url = "http://localhost:8010/storage/reduce-stock";
		//整合了Nacos+LoadBalaner,可以使用微服务名tlmall-storage代替localhost:8020
		String storage_url = "http://tlmall-storage/storage/reduce-stock";
		Integer storageCode = restTemplate.postForObject(storage_url,storageDTO, Result.class).getCode();
		return storageCode;
	}

	public Integer reduceBalanceByRestTemplate(String userId,Integer count) {
		int price = count * 2;
		AccountDTO accountDTO = new AccountDTO();
		accountDTO.setUserId(userId);
		accountDTO.setPrice(price);
		//RestTemplate远程调用
//		String account_url = "http://localhost:8020/account/reduce-balance";
//		整合了Nacos+LoadBalaner,可以使用微服务名tlmall-account代替localhost:8020
		String account_url = "http://tlmall-account/account/reduce-balance";
		Integer accountCode = restTemplate.postForObject(account_url, accountDTO, Result.class).getCode();
		return accountCode;
	}
	public Integer reduceStockByOpenFeignClient(String commodityCode,Integer count) {
		StorageDTO storageDTO = new StorageDTO();
		storageDTO.setCommodityCode(commodityCode);
		storageDTO.setCount(count);
		return storageService.reduceStock(storageDTO).getCode();
	}

	public Integer reduceBalanceByOpenFeignClient(String userId,Integer count) {
		int price = count * 2;
		AccountDTO accountDTO = new AccountDTO();
		accountDTO.setUserId(userId);
		accountDTO.setPrice(price);
		return accountService.reduceBalance(accountDTO).getCode();
	}
}
